Kazuhiko OZEKI


The Use of Overlapped Sub-Bands in Multi-Band, Multi-SNR, Multi-Path Recognition of Noisy Word Utterances
Yutaka TSUBOI Takehiro IHARA Kazuyuki TAKAGI Kazuhiko OZEKI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2008/06/01
Vol. E91-D  No. 6  pp. 1774-1782
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
multi-bandmulti-SNRmulti-pathoverlapped sub-bandsnoisy word recognitionambient noise
 Summary | Full Text:PDF(586.5KB)

Noise Reduction in Time Domain Using Referential Reconstruction
Takehiro IHARA Takayuki NAGAI Kazuhiko OZEKI Akira KUREMATSU 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2006/03/01
Vol. E89-D  No. 3  pp. 1203-1213
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
noise reductiontime domainreferential reconstructionpattern matchingautomatic speech recognition
 Summary | Full Text:PDF(1MB)

Japanese Dependency Structure Analysis Using Information about Multiple Pauses and F0
Meirong LU Kazuyuki TAKAGI Kazuhiko OZEKI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2006/01/01
Vol. E89-D  No. 1  pp. 298-304
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
syntaxdependency analysisprosodypausefundamental frequencyminimum penalty parser
 Summary | Full Text:PDF(425.4KB)

Automatic Adjustment of Subband Likelihood Recombination Weights for Improving Noise-Robustness of a Multi-SNR Multi-Band Speaker Identification System
Kenichi YOSHIDA Kazuyuki TAKAGI Kazuhiko OZEKI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2004/11/01
Vol. E87-D  No. 11  pp. 2453-2459
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
multi-SNR multi-band methodnoise-robustnessspeaker identificationsubband recombination weightspectral subtraction
 Summary | Full Text:PDF(234.8KB)

Effectiveness of Word String Language Models on Noisy Broadcast News Speech Recognition
Kazuyuki TAKAGI Rei OGURO Kazuhiko OZEKI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2002/07/01
Vol. E85-D  No. 7  pp. 1130-1137
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
word stringlanguage modelrobustnessbroadcast news speechnoisy speech recognition
 Summary | Full Text:PDF(585.1KB)

Maximum Likelihood Estimation of Power-Spectrum of Speech Signals with Additive White Noise
Kazuhiko OZEKI 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1986/11/25
Vol. E69-E  No. 11  pp. 1153-1156
Type of Manuscript:  LETTER
Category: Signal Processing and Theory
Keyword: 
 Summary | Full Text:PDF(217.2KB)